1. During the isovolumic contraction (early ventricular systole) phase of the cardiac cycle: A. The tricuspid and bicuspid valves are closed. B. The mitral and aortic valves are open. C. The tricuspid valve is closed and pulmonic valve is open. D. The mitral valve is open and aortic valve is closed.
Multiple Choice. Answer the following questions.
1. During the isovolumic contraction (early ventricular systole) phase of the cardiac cycle:
A. The tricuspid and bicuspid valves are closed.
B. The mitral and aortic valves are open.
C. The tricuspid valve is closed and pulmonic valve is open.
D. The mitral valve is open and aortic valve is closed.
2. Pathway of blood circulation in adult.
A. Superior vena cava - right atrium - tricuspid valve - right ventricle
B. Pulmonary vein - left atrium - mitral valve - left ventricle
C. Left ventricle - aortic valve - ascending aorta - brachiocephalic
D. Right ventricle - pulmonary valve - pulmonary trunk - pulmonary artery
E. All pathways are correct.
3.Which period of the heart cycle is completely occupied by the ventricles relaxing?
A. atrial systole
B. atrial diastole
C. ventricular systole
D. ventricular diastole
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